Improvement in lamps



. 2 Sheets-Sheet 1. H. L. IVES.

Lamps.

No. 196,581 Patented Oct. 30,1877.

FIG.

Ill

y 3' lm INVENTOR wj a ww N-PETERS. FHOTO-U-THOGRAPHER. WASHINGTON, D C.

2 Sheats-Sheet 2.

H. L. IVES.

Lamps.

Patented Oct. 30, 1877.

/NVEN TOR N. PETiRs, FHOTO-LITHQGRAPHER, WASHINGTON, D C.

" UNITED STATES PATENT OFFICE.

' HIRAM LIVES, or TROY, NEW YORK.

I IMPROVEMENT IN LAIVIPS.

Specification forming part of Letters Patent No. 196,581, dated October30, 1877, application filed July 24, 1877.

To all whom it may concern:

Be it known that I, HIRAM L. IVES, of Troy, in the county of Rensselaerand State of New York, have invented certain new and useful Improvementsin Lamp Burners and Chimneys and I do hereby declare the following to bea full, clear, and exact description thereof, reference being had to theaccompanying drawings, and to the letters of reference marked thereon.

The object of my invention is to furnish a more abundant supply of airto the burner of the lamp, and to more intimately commingle the samewith the burning gases, and thereby produce a greater illuminating power5 and the nature of my invention consists in a bellshaped or flaringchimney with interior recess at the top and a regulating draft-cap, incombination with a burner and lamp, and also in combining, with anArgand burner or roimd wick, a deflector, a bell-shaped recessedchimney, and cap, all as hereinafter more fully set forth.

In the annexed drawings, which fully illustrate my invention, and towhich reference is made, Figure 1 is a plan view of a burner embodying apart of my invention, portionsbein g broken away. Fig. 2 is a verticalsectional view of my invention on the line w 00, Figs. 1 and 3. Fig. 3is a vertical section on the line y y, Figs. 1 and 2. Fig. 4 is acentral vertical section, showing my invention as applied to an Argandburner.

The lamp-burner is constructed, in the usual manner, with wick-tube Gand cone at around and over the same, and a suitable disk or support forthe chimney E. For the purpose of increasing the draft and promotingcombustion, and at the same time to prevent the danger of breakage ofglass when used, this chimney is made sufficiently broad orsubstantially bell-shaped and flaring outward and upward from the line 2z in Figs. 2 and 4.

Near the upper end of the chimney, on the inside, is formed a seat orrecess, 0, within which, by suitable springs, is closely adjusted thecap or dome F. This cap has a central opening, amply large for theescape of hot air, and may also have a series of small apertures, f,around its outer edge.

In operation my improved chimney and cap tend to increase the draft,carrying oh" the escaping hot currents sufficiently fast to give asteady and uniformly intense flame with no apparent smoke or waste ofcarbon.

The cap F may be made of metal, and used also as a reflector, or ofporcelain, mica, or other suitable material.

Over the cone cl of the burner is placed a deflecting-shell, D, made ofmetal, glass, or other translucent material. This deflector issufficiently large, and extends far enough around and over the cone ofthe burner, so as to form a chamber through which the air in full volumeimpinges upon the flame, and produces complete combustion of theescaping burning gases. The burner is, of course, provided with suitableopenings to admit the air, allowing it to pass both within and outsideof the shell to the point of combustion.

The main object to be accomplished by my invention is to accumulate andemploy the greatest amount of air that can be conveyed within a limitedspace to be brought in direct contact with all parts or atoms of theescaping carbon, so that there may be no waste of illuminating power.

With an Argand burner the deflector D is preferably made in the formshown in Fig. 4, its upper end below the top of the wick-tube beinggradually contracted to such a height above the wick-tube as to make anample chamber, n, around and above said tube; and around the upperperiphery is formed a bulbous opening, H, by turning forward anddownward the upper edge of the deflector.

I thus form a directing or regulating chamber, 11, through and aroundwhich the air, in constant and impinging currents, acts upon the outeredge of the circular flame, while the currents pass within the wick tubein the ordinary manner, and as a consequence all the currents of air areefficiently utilized, and, in connection with the chimney and regulatingdraft-dome, perfect combustion ensues, and a constant and highillmninating power is kept up, while no disagreeable odors from smoke or2. In combination with an Argand-burner imperfect combustion follow. orround wick, the deflector D, constructed Having thus fully described myinvention, substantially as described, the bell-shaped what I claim asnew, and desire to secure by recessed chimney E, and cap to the same,for Letters Patent, isthe purposes set forth.

1. A bell-shaped or flaring chimney, E, with HJBAM L. IVES. recessed top0 and regulating draft-cap F, in Witnesses: combination with a burnerand lamp, as set J. W. PALMER,

forth. J. T. GOODFELLOW.

